How is the chain reaction slowed down in a nuclear reactor?

Choose 1 answer

by cooling the reactor down

by inserting the control rods

by removing the control rods

by removing the fuel rods

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What is a chain reaction?

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a reaction that causes a chain made from uranium to split

when atoms of uranium join together in a long chain

when neutrons from one reaction fire off to cause further reactions and so on

when splitting uranium nuclei cause other uranium nuclei to become unstable

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What happens when a neutron is absorbed by a nucleus of an atom of uranium-235?

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mass number of atom increases

one electron is let out

a uranium-236 nucleus is formed

the uranium-235 nucleus becomes unstable

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In nuclear fusion, what decreases as the reaction progresses?

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Correct Answer

Incorrect Answers

amount of helium

energy

mass

number of neutrons

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Fill in the blanks.

Select the missing words in the text.

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Answer incorrect

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